Gotcha, thank you for clearing that up for me. Looking forward to doing my own test on the poolNever a stupid question. You're new and we all remember what that was like.
The PH meter and standard sizer are not needed but are fun for the folks who like toys. The SLAM option is the only add on I'd get personally with the TFpro-salt. If getting the TF100salt with SLAM option, add the speed stir also. It's a game changer.
Neither the borate or salt strips are very accurate. They are ok for spot checks but as with strips start degrading the moment you open the seal.